Instead, the laid-back View co-host, 41, is letting her new fiancé take charge when it comes to all the details.

"I trust his style," she told PEOPLE at the opening of The Attic rooftop lounge in N.Y.C. on June 11. "So whatever he wants. All I know is that this is our last wedding and we're going to make it great."

"We have three boys together," says Wahlberg. "They'll be a big part. We're about who's there and what the spirit is more so than where it is and how much money we spend. That's not what it is for us."

Wahlberg tells PEOPLE that McCarthy's son, Evan, 12, has officially moved into their N.Y.C. home.